source: trunk/FACT++/src/Fits.h@ 10485

#ifndef FACT_Fits
#define FACT_Fits

#include <CCfits/CCfits>
#include <vector>

#include "Description.h"

using namespace CCfits;

class Converter;

class Fits
{
        private:
                ///The CCfits object to the FITS file
                FITS* fFile;
                ///Flag indicating whether the FITS object should be managed internally or not.
                bool fOwner;
                ///The CCfits Table
                Table* fTable;
                ///The current number of Rows in the table
                int fNumRows;
                ///Name of the "standard", i.e. data found in every fits file
                ///TODO make these variable static so that they are shared by every object.
                ///TODO add also a static boolean to initialize these only once
                std::vector<Description> fStandardColDesc;
                ///Format of the standard columns.
                std::vector<std::string> fStandardFormats;
                ///the pointers to the standard variables
                std::vector<void*> fStandardPointers;
                ///the number of bytes taken by each standard variable
                std::vector<int> fStandardNumBytes;
                ///the vector of data column names
                std::vector<Description> fDataColDesc;
                ///the data format of the data columns
                std::vector<std::string> fDataFormats;
                ///the pointer to the contiguous memory location where the data is stored (i.e. the dim data pointer)
                void* fDataPointer;
                ///the size of the data, in bytes.
                int fDataNumBytes;
                ///the copy buffer. Required to put the standard and data variable in contguous memory 
                unsigned char* fCopyBuffer;
                ///the total number of bytes per FITS row
                int fTotalNumBytes;
                ///to keep track of the time of the latest written entry (to update the header when closing the file)
                double fEndMjD;
                ///Write the FITS header keys
                void WriteHeaderKeys();
                
        public:
                
                Fits() :  fFile(NULL),
                                  fOwner(false),
                                  fTable(NULL), 
                                         fNumRows(0), 
                                         fDataPointer(NULL), 
                                         fDataNumBytes(0), 
                                         fCopyBuffer(NULL), 
                                         fTotalNumBytes(0),
                                         fEndMjD(0.0),
                                         fFileName("")
                 {}
                
                virtual ~Fits() 
                {
                        if (IsOpen())
                                Close();
                }
                ///returns wether or not the file is currently open or not
                bool IsOpen() {return fFile != NULL;}
                
                ///Adds a column that exists in all FITS files
                void AddStandardColumn(Description& desc, std::string dataFormat, void* dataPointer, long unsigned int numDataBytes);
                
                ///Adds columns specific to the service being logged.
                void InitDataColumns(std::vector<Description> desc, std::vector<std::string>& dataFormat, void* dataPointer, int numDataBytes);

                ///Opens a FITS file
                void Open(const std::string& fileName, const std::string& tableName, FITS* file);

                ///Write one line of data. Use the given converter.
                void Write(Converter* conv);
                
                ///Close the currently opened file.
                void Close();
                
                ///Get the size currently written on the disk
                int GetWrittenSize();
                ///Name of the openned file. For querying stats
                std::string fFileName;

};//Fits


#endif /*FITS_H_*/